Yes, I think that should work nicely.
have you considered rdiff-backup? http://rdiff-backup.stanford.edu
you can rdiff-backup to a firewire drive or 2 for a good combination of maximum storage and massive incrementals (not incrementals reverse diffs really)
so last backup is a full backup and the incrementals are really reverse diffs, so you merge them to restore.
look on the wiki for some lame script I wrote to help with firewire drives.
if you don't like the cost of firewire drives (much cheaper than tapes) then find someone remote to backup to.
the increments are pretty small mostly
dave -- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html
